Another policy, SEND_WHITESPACE_TAG, will append tags to plaintext messages,
indicating a willingness to speak OTR. If the recipient in turn has set the
policy WHITESPACE_START_AKE, the AKE will be initiated.

Close private connection: To end an encrypted communication session,

buddy.endOtr(function() {
// calls back when the 'disconnect' message has been sent
})

will return the message state to plaintext and notify the correspondent.

Options: A dictionary of the current options accepted by the OTR constructor.

Fingerprints

// assume you've gone through the ake with buddy
var buddy = new OTR({ priv: myKey })
// buddy.msgstate === OTR.CONST.MSGSTATE_ENCRYPTED
// for my key, either one of the following
myKey.fingerprint()
// or,
buddy.priv.fingerprint()
// for their key
buddy.their_priv_pk.fingerprint()

Socialist Millionaire Protocol

At any time after establishing encryption, either party can initiate SMP to
detect impersonation or man-in-the-middle attacks. A shared secret,
exchanged through an out-of-band channel prior to starting the conversation,
is required.